Hose clamp



sept. 19, 1,944.

HOSE CLAMP J. F. HURLEY 2,358,575

Filed Oct. 29, 1943 attorney Patented Sept. 19, 1944 i PATENT OFFICE f 2,358,575 i Host.L CLAMe Jerry, Hurley, Spokane, Wash.V Y Application. October 29, 1943, Serial No. 508,122:V

about a tube constituting an Velement of arr-air craft and so bind the hose about the tube that it cannot work loose whenl subjected to vibrations or to sudden shocks incident to landing the aircraft or runningralong a landing eld.

Another objectofA the invention is to provide a clamp including a band for encircling the hosel and a pressure block, the band and the block being formed with ribs and grooves for cooper-V ating with companion ribs about the tube and crimping the hose so that it will be firmly bound in place.

Another object of the invention is' to so form ends of the block that they will have intertting engagement with the band and thus prevent the block from turning out of its proper position when the pressure applying screw is tightened.V

Another object of the invention is to provide a clamp which is simple in construction, easy to apply` and of such formation that when it is applied and its set screw tightened, it will not be liable to work loose.

The invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a view showing the improved clamp in end elevation and disposed about a hose for securing the hose to a tube.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1.

Fig. 3 is a View similar to Fig. 2, of a modified form of clamp.

Fig. 4 is a sectional view of another modified form of clamp.

Fig. 5 is a perspective View of the block.

The clamp illustrated in Figs. 1 and 2 of the drawing has a band or strap I formed from a strip of strong metal and having its ends welded to ends of a cross head 2 formed of hard metal and having a threaded opening 3 midway the length thereof. A set screw 4 is threaded through the opening 3 with its inner end tting into a depression or socket 5 formed in a. block 6 to force the block into tight binding engagement with a hose 1 about which the clamp ts and bind the hose tightly about a. tube 8, a locking nut 9 being provided upon the screw for engaging the cross head and preventing loosening of the screw.

VReferring to Figs. 2 and 5, it will be seen that the band or strap I is crimped to form a rib I0 of concavo Vconvex formation for tting between pressure 4 claims. e (C1. 24-190 1 circumferentially extending ribs II ofthe tube 8, the under face of the block being formed .with a longitudinally extending rib I2 located midway its width and disposed 'between grooves I3,r and ends of` the block beingformedf with ribs I4i and grooves I5.Y Y Y f i When the 'clamp isV applied, it fits. aboutV the hosewithY the ribs I0; vandflZfdisposed between the ribs IIT' offitheV tube-andi asthescrew 4 is tightened to force the block inwardly and shift the cross head outwardly, the hose will be crimped and portions forced into the grooves I3 and close against the band at opposite sides` of the rib I0. It will thus be seen that the crimped portions of the hose will t closely about and between the ribs Il and likelihood of the hose slipping from the tube 8 will be eliminated. Since ends of the block are formed with the ribs I4 and grooves I5, intertting engagement will be established between the block and side portions of the band and the block will be prevented from turning with Y the screw as the screw is tightened. Therefore, the block will be maintained in a position circumferentially of the hose and the hose will be crimped for its entire circumference. It Will thus be impossible for the hose to accidentally slip out of engagement with the tube. When, however, it is desired to detach the hose from the tube, it is merely necessary to loosen lthe screw 4 and the clamp may then be shifted cut'ofy place about the ribs II and the h'ose drawn off the tube.

In Figure 3, therehas been illustrated a clamp of slightly modified formation.l In this form. of clamp, the band I6 is formed with spaced ribs I'I defining a, groove I8 between them and thel block I9 is formed with a groove 20 disposed midway the width of the Lblock between ribs 2I. The tube 22 has a. singlel circumferentially extending rib 23 and,.when the screw 24 carried by the cross head 25 is tightened, the hose 26 will be formed with a single rib 21 instead of a plu-r rality of ribs. Y

In Figure 4 the block 28 is formed in its under face with transversely spaced grooves 29 and circumferentially yextending ribs 30 which taper transversely so that they will have biting engagement with the hose 3| and crimp the Yhose very firmly about the circumferentially extending ribs 32 of the tube 33. It is also to be noted that in this embodiment of the invention, the ribs and grooves of the band V28 are formed by cutting the under face of the block and also the corresponding ribs 34 and grooves 35 rof the band 36 are similarly formed and the ribs of the band and the block have very tight gripping engagement with the hose.

Having thus described the invention, what is claimed is:

1. A hose clamp comprisingV a cross head 5 formed with a threaded bore, a band for engaging about a hose, said band having its ends secured to ends of the cross head, a screw threaded through the bore of said cross head, and a pressure block under said ,cross head formed with a socket receiving `thgin'ner end of the set screw, inner faces of the block and the band being formed with longitudinally extending ribs yand-14V grooves for crimping portions of a hose about circumferentially extending ribs of a tube and firmly securing the hose about the tube, and ends y of the block being formed externally with longi- Vtudinally extending ribs andrgroove's Vfor inter? fitting engagement with the ribs and the grooves.

of the band to prevent transverse movement of theA block out of operative position under the crosshead.

2; A; hose clampfcomprising a cross head, a band for extending about a hose having ends secured against ends of the cross head, a set screw threaded through the cross head, a block under said cross head 4disposed between ends of the band and engaged by the inner end of Ysaid set screw, endsofr the block being formed with trans- Vencircling band,having.,its ends xed to ends of the cross headya block undevervltl'le cross head, and a set screw threaded through the cross head and engaging said block, the vband and the block being formed with ribs Yand grooves cooperating with the ribs of the tube to crimp the hose and firmly hold the hose in place about the tube.

4. A hose 4clamp comprising a cross head, a hose-encircling band having ends xed to ends of the cross head, a block under said cross head extendingrbetween end portions of the band, and a set screw passing through the cross head with `its inner end bearing against the block for tightening the clamp about a hose, ends of the block andconfronting portions of the band having intertting ribs and grooves to prevent transverse movement of the cross head out of operative position under the block when the screw is tightened. l l Y I y JERRY F. HURLEY.

versely spaced ribs; and said band being formed 

